RF VCO Coupling Control Through Abnormal Signal Detection
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Solution Overview
Problem
The increasing demand for higher data transmission rates in 5G communication systems, particularly on ultra-high frequency bands, has led to challenges in managing VCO coupling within the limited space of electronic devices, which affects the performance and efficiency of RF circuits.
Innovation Solution
The implementation of a signal detection block in the RF circuit to identify abnormal signals from a first VCO, allowing the communication processor to control the operating frequency of a second VCO, thereby reducing coupling between VCOs and optimizing RF circuit operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple VCOs are disposed in close proximity to support carrier aggregation and dual-connectivity, then the RF circuit can support higher data transmission rates and multiple frequency bands, but coupling between VCOs increases causing abnormal signals and degraded performance
Solution Approach 1:
The patent implements a feedback mechanism where a signal detection block continuously monitors the output signal of the first VCO and provides feedback to the communication processor. When abnormal signals indicating coupling are detected, the system adjusts the operating frequency of the second VCO to eliminate the coupling effect, thereby maintaining high data transmission rates while preventing performance degradation
Solution Approach 2:
The patent dynamically changes the operating frequency parameter of the second VCO based on detected coupling conditions. By adjusting this critical parameter in real-time, the system resolves the coupling issue between VCOs while maintaining the ability to support multiple frequency bands and high data transmission rates required for 5G communication
2Object-affected harmful factors
If the operating frequency of the second VCO is continuously monitored and adjusted to reduce coupling, then coupling effects are minimized, but current consumption increases
Solution Approach 1:
The patent employs periodic monitoring instead of continuous monitoring, where the signal detection block checks for abnormal signals at specific intervals. Frequency adjustment of the second VCO is performed only when coupling is detected, rather than continuously. This periodic approach maintains effective coupling reduction while significantly reducing unnecessary current consumption during normal operation
3Duration of action of moving object
If the space for disposing RF circuit components is reduced to accommodate larger batteries, then battery capacity increases extending device usage, but component layout becomes more constrained increasing coupling risk
Solution Approach 1:
The feedback mechanism allows the system to detect and respond to coupling conditions regardless of physical component layout. By continuously monitoring VCO output signals and adjusting operating frequencies in response to detected coupling, the system can effectively manage coupling effects even when components are disposed in constrained spaces due to larger battery requirements
Data Source
AI summary
According to one embodiment, an electronic device may be provided, the electronic device comprising an RF circuit and a communication processor operatively connected to the RF circuit, wherein the RF circuit comprises at least one reception circuit, at least one transmission circuit, a first VCO, a second VCO, and a signal detection block electrically connected to the first VCO, and the communication processor is configured to control the RF circuit to change the operating frequency of the second VCO on the basis of determining whether a signal output from the first VCO is an abnormal signal. Various other embodiments may be possible.